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SIST ISO 5516:1995
01-marec-1995
Sadje, zelenjava in sadni in zelenjavni proizvodi - Razklop organskih snovi pred
analizo - Sežig
Fruits, vegetables and derived products -- Decomposition of organic matter prior to
analysis -- Ashing method
Fruits, légumes et produits dérivés -- Décomposition des matières organiques en vue de
l'analyse -- Méthode par incinération
Ta slovenski standard je istoveten z: ISO 5516:1978
ICS:
67.080.01 Sadje, zelenjava in njuni Fruits, vegetables and
proizvodi na splošno derived products in general
SIST ISO 5516:1995 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ISO 5516:1995
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SIST ISO 5516:1995
INTERNATIONAL STANDARD
5516
INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWvlE~YHAPO~HAR OPrAHM3A~klR I-IO CTAH~APTM3AL&lM.ORGANISATION INTERNATIONALE DE NORMALISATION
Fruits, vegetables and derived products - Decomposition
of organic matter Prior to analysis - Ashing method
Dkcomposition des matieres organiques en vue de l/analyse -
Fruits, le’gumes et produits dbrivk -
Mthode par incinka tion
First edition - 1978-12-15
UDC 634.1/635 : 543.05 : 542.42 Ref. No. ISO 5516-1978 (E)
Descriptors :
food products, fruits, vegetables, fruit and vegetable products, Chemical analysis, determination of content; organic materials,
CD
incineration analysis.
w
Lo
Price based on 2 pages
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SIST ISO 5516:1995
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO member bodies). The work of developing
International Standards is carried out through ISO technical committees. Every
member body interested in a subject for which a technical committee has been set
up has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated
to the member bodies for approval before their acceptance as International
Standards by the ISO Council.
International Standard ISO 5516 was developed by Technical Committee
ISO/TC 34, Agricultural foodproducts, and was circulated to the member bodies in
November 1976.
lt has been approved by the member bodies of the following countries :
Australia India Portugal
Austria Iran Romania
Bulgaria Israel South Africa, Rep. of
Canada Korea, Rep. of Spain
Chile Mexico Thailand
Czechoslovakia Netherlands Turkey
France
New Zealand United Kingdom
Germany, F. R. Peru Yugoslavia
Hungary Poland
The member bodies of the following countries expressed disapproval of the
document on technical ounds
gr
I reland
U.S.A.
0 International Organizarion for Standardization, 1978 l
Printed in Switzerland
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SIST ISO 5516:1995
ISO 5516-1978(E)
INTERNATIONAL STANDARD
Fruits, vegetables and derived products - Decomposition
of organic matter Prior to analysis - Ashing method
4.3 Sulphuric acid, pzo 1,84 g/ml.
0 INTRODUCTION
There are two methods for decomposition of the organic or
matter present in fruits, vegetables and derived products :
4.4 Hydrochlorit acid, pzo IJ9 g/ml.
a) ashing method, described in this International
Standard;
5 APPARATUS
b) wet decomposition method (see ISO 5515).
Usual laboratory apparatus, and in particular :
The specific International Standards on analysis of the
products will, if necessary, identify which method to use
5.1 Dish, of platinum or any other material not attacked
and any modifications to be made to the method.
under the conditions of the test, flat-bottomed, diameter
about 60 mm, height about 35 mm.
1 SCOPE AND FIELD OF APPLICATION
5.2 Circle of ashless filter Paper, fitting accurately into the
This International Standard specifies a method for the
dish (5.1). Cut out a round hole, of 2 to 3 mm diameter,
decomposition of the organic matter in fruits, vegetables
from the centre and tut the Paper along a radius (see the
or derived products by ashing, Prior to the analysis of their
diagram).
mineral (metal) content.
2 REFERENCE
ISO 5515, Fruits, vegetables and derived products -
Decomposition of organic matter Prior to analysis - Wet
me thod.
@
3 PRINCIPLE
5.3 Ashless filter Paper, if necessary (see 6.3).
Incineration of a test Portion at 525 + 25 “C after addition,
of aluminium chloride or magnesium
in certain cases,
5.4 Electric muffle furnace, capable of being controlled
acetate Solution to facilitate ashing. Dissolution of the ash
at 525 f. 25 “C.
t
obtained in sulphuric acid or hydrochloric acid.
5.5 Suitable equipment for drying (for example, boiling
water bath and oven capable of being maintained at
4 REAGENT
...